Transcranial magnetic stimulation (TMS) is a noninvasive method for studying bra

Question

Transcranial magnetic stimulation (TMS) is a noninvasive method for studying brain function, and possibly for treatment as well. In this technique, a conducting loop is held near a person's head. When the current in the loop is changed rapidly, the magnetic field it creates can change at a rate of 3.00 104 T/s. This rapidly changing magnetic field induces an electric current in a restricted region of the brain, which you may assume is a single conducting path oriented to receive maximum flux. This can cause a finger to twitch, a bright spot to appear in the visual field, or a feeling of complete happiness to overwhelm a person.

If this area is approximately circular, what is the size of the induced electric field:

Explanation / Answer

b. induced electric fiels E = V/d, d is distace at which field is to be calculated

so you neeed radius of circular orbit to det EF.

c. d' = half of d. use E = V/d

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